Capsid scaffolding protein: Acts as a scaffold protein by binding major capsid protein VP5 in the cytoplasm, inducing the nuclear localization of both proteins. Multimerizes in the nucleus such as VP5 forms the icosahedral T=16 capsid. Autocatalytic cleavage releases the assembly protein, and subsequently abolishes interaction with major capsid protein VP5. Cleavages products are evicted from t...